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package homomorphism.set;

import org.apache.hadoop.io.Writable;

/**
 *
 * @author takeshi
 */
public interface SetHomomorphismInterface <T1 extends Writable,T2 extends Writable> {
      T2 filter(T1 val); //equal to map
      T2 plus(T2 a, T2 b); //equal to reduce
}

